Optimization of Hollow Materials-Based Electron Transport Layer for Enhanced Performance of Perovskite Solar Cell

AbstractThere are many ways to boost the optical absorption efficiency of photovoltaic devices. It has been observed that the plasmonic effect is an efficient technique to increase the incident light collection and improve carrier dynamic control. Here, we made some modifications in the electron transport layer (ETL) and hole transport layer (HTL) of perovskite solar cells (PSCs). The hollow spheres of TiO2 nanoparticles (NP) of different sizes were incorporated in the ETL, and carbon nanoparticles were added to the HTL of the PSCs. Finite element method (FEM) was used to determine the UV –Vis absorption and bandgap energy results under AM 1.5 solar spectrum. General-purpose photovoltaic device model (GPVDM) and COMSOL Multiphysics version 5.3 are the software tools used in the analysis. Here, we introduced gold nanoparticles along with dielectric material (TiO2) of different geome tries in the absorber layer of PSCs to investigate the optical absorption and bandgap energy of the PSC structure. For the monolayer structure, we have achieved a power conversion efficiency (PCE) of 24.23%, which is 2.54% higher than the bilayer structure of a Perovskite solar cell. In the absorber layer, we have also used a core@shell structure with metal as core and dielectric nanoparticles TiO2 and SiO2 as shell materials. The optical absorption in both Au@TiO2/Au@SiO2 core–shell and without plasmonic NP TiO2/SiO2 is 10.82% and 4.11%, respectively. These findings suggested that by using the...
Source: Plasmonics - Category: Biomedical Science Source Type: research